builtins.AttributeError
AttributeError: can't set attribute

Traceback (most recent call last)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1997, in __call__
return self.wsgi_app(environ, start_response)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1985, in wsgi_app
response = self.handle_exception(e)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1540, in handle_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/flask/_compat.py", line 33, in reraise
raise value
File "/usr/lib/python3/dist-packages/flask/app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/flask/_compat.py", line 33, in reraise
raise value
File "/usr/lib/python3/dist-packages/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1598, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/home/pi/DancesafeResults/DancesafeResults.py", line 110, in test_add
users = Users(request.form['username'], request.form['fullname'], request.form['email'], request.form['facebookurl'], request.form['instagram'], request.form['chapter'], request.form['password'])
File "<string>", line 4, in __init__

File "/usr/local/lib/python3.5/dist-packages/SQLAlchemy-1.2.0b3-py3.5-linux-armv7l.egg/sqlalchemy/orm/state.py", line 416, in _initialize_instance
manager.dispatch.init_failure(self, args, kwargs)
File "/usr/local/lib/python3.5/dist-packages/SQLAlchemy-1.2.0b3-py3.5-linux-armv7l.egg/sqlalchemy/util/langhelpers.py", line 66, in __exit__
compat.reraise(exc_type, exc_value, exc_tb)
File "/usr/local/lib/python3.5/dist-packages/SQLAlchemy-1.2.0b3-py3.5-linux-armv7l.egg/sqlalchemy/util/compat.py", line 187, in reraise
raise value
File "/usr/local/lib/python3.5/dist-packages/SQLAlchemy-1.2.0b3-py3.5-linux-armv7l.egg/sqlalchemy/orm/state.py", line 413, in _initialize_instance
return manager.original_init(*mixed[1:], **kwargs)
File "/home/pi/DancesafeResults/alchemy.py", line 223, in __init__
self.password = _password
File "/usr/local/lib/python3.5/dist-packages/SQLAlchemy-1.2.0b3-py3.5-linux-armv7l.egg/sqlalchemy/ext/hybrid.py", line 869, in __set__
raise AttributeError("can't set attribute")
AttributeError: can't set attribute